ADDAC 302 CV Mixup (2018–)
A joystick, an accelerometer, and five CV outs in a 10 HP slab - this is your body talking directly to the patch.
Overview
Plug in the ADDAC 302 CV Mixup and you don't need another sequencer, LFO, or random source. You have hands and motion, and the module turns both into voltage. It doesn't look flashy. It sits there, minimalist and unassuming, until you grab the joystick or tilt the whole rack like you're nudging a pinball machine. Then the patch moves. Filters open with a slow sweep of your thumb. Pitches bend as you lean the module forward. Envelopes stutter as you shake it like a maraca.
The 302 sits in the ADDAC 300 series as a tactile interface module. It isn't for generating complex sequences or deep algorithmic variations. It bridges the physical and the electronic in real time. Modules like the ADDAC 306 VC Transitions offer macro control via a slider, and the 310 Pressure to CV turns breath into modulation. The 302 is more primal: movement, gesture, and touch turned into voltage. That makes it a favorite for live performers, installation artists, and anyone tired of staring at knobs while their body sits idle. It's also useful in the studio, where a quick tilt or joystick nudge can break a stale patch wide open, adding unpredictability without losing control.
Specifications
| Manufacturer | ADDAC System |
| Production Years | 2018– |
| Original Price | $220 |
| Width | 10 HP |
| Depth | 35 mm |
| Current Draw +12V | 40 mA |
| Current Draw -12V | 20 mA |
| CV Outputs | 5 |
| X-Axis Joystick Output | Yes |
| Y-Axis Joystick Output | Yes |
| Z-Axis Accelerometer Output | Yes |
| Button 1 Output | Gate |
| Button 2 Output | Gate |
| Mix Output | Average of CV 1 and CV 2 |
| Remapping | Continuous and discrete |
| Bus Board Connector | 8-pin IDC (Doepfer style) |
| Weight | 0.3 kg |
Key Features
The Joystick: Analog Gesture Control
The 302's joystick isn't a gamepad part bolted on as an afterthought. It's a precision analog controller that outputs smooth, voltage-stable X and Y axis signals. Patch CV 1 and CV 2 to a pair of parameters (say, filter cutoff and resonance) and you have a two-dimensional control surface. Push up and the sound gets brighter and louder. Pull back and it recedes. Because the outputs are continuous, there's no stepping or quantization. The joystick also has two push-button functions (Button 1 and 2), each sending a +5V gate when pressed, so you can trigger envelopes or advance sequences mid-gesture.
Accelerometer: Tilt, Shake, and Move
Then there's the accelerometer, which does three-axis sensing and turns physical movement into control voltage. CV 3, 4, and 5 map to X, Y, and Z tilt, so you can modulate parameters by rotating the module in space. Tilt it forward and your delay feedback ramps up. Shake it side to side and your panning oscillates wildly. This isn't subtle modulation, and it's a little dangerous if your rack isn't bolted down. The accelerometer is especially useful for dynamic, evolving textures in ambient or experimental patches. Set the remapping to discrete mode and each axis can output stepped voltages, turning tilting motions into quantized sequences.
Mix Output: The Hidden Performer
The Mix output is buried in the specs but vital in practice. It's a dedicated CV out that averages the signals from CV 1 and CV 2. At first glance that looks redundant. In a live patch it isn't. Say you're using the joystick to control two parameters independently. The Mix output gives you a single voltage that represents their combined position, which suits modulating overall brightness, volume, or reverb send in tandem with your gestures. It works as a built-in blend control, so you can scale the intensity of a performance without reaching for another fader. ModularGrid users have noted it's particularly handy when using the 302 as a macro controller for complex patches, where a single "master expression" voltage can tie multiple modulations together.
Historical Context
The ADDAC 302 CV Mixup arrived in 2018, when Eurorack was deep into touch and motion control. Doepfer had long offered joysticks and pressure pads, and MakeNoise's Pressure Points brought expressive control to the mainstream. ADDAC carved its niche by focusing on physical interaction as performance. The 302 wasn't the first module to use an accelerometer, but it was among the first to combine one with a joystick and discrete controls in a single, compact format. It shared DNA with experimental controllers like the Buchla Thunder or Haken Audio's Eigenharp, at a fraction of the cost and complexity.
Collectibility & Value
The 302 isn't a rare module, but it's not common either. It's been in continuous production since 2018, and while ADDAC doesn't release production numbers, it's not a high-volume item. On the used market, expect to pay between $150 and $190 in good condition, with mint units occasionally hitting $210. Build quality is solid - aluminum faceplate, sturdy joystick, and reliable solder joints - so failures are rare. That said, the joystick can wear out with heavy use, especially if pushed aggressively during live sets. Service technicians note that replacing it requires desoldering, so owners should avoid forcing the stick beyond its range. The accelerometer is sealed and has no reported failure modes, but dropping the module (especially while mounted in a skiff) could potentially misalign it. There's no firmware and no moving parts beyond the joystick and buttons, so there's little to go wrong. For buyers, the main check is ensuring all five CV outputs respond correctly and that the buttons trigger clean gates. A quick test with a scope or multimeter will reveal any drift or dead zones.
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